Re: Pacmakers and Tesla coils = bad??

To: tesla-at-pupman-dot-com
Subject: Re: Pacmakers and Tesla coils = bad??
From: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Mon, 14 Feb 2000 16:53:08 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme



Already did some testing in that area with Medtronics (the large pacemaker
mfgr in Minneapolis).  At a reasonable distance of 6-8 feet nothing shows up
that represents any danger to people with these devices.  It did make a lot
of noise in a hearing aid so we tend to warn them as well.  We usually
specify a distance of not less than 30-40 feet for all our shows with a 1
MEV coil operating at fundamental of 170 KHZ.  Smaller coils running at 500
KHZ presented even less due to their lower power levels.

Dr. Resonance


-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Monday, February 14, 2000 2:43 PM
Subject: RE: Pacmakers and Tesla coils = bad??


>Original Poster: "Viggy" <LittleViggy-at-alum.manhattan.edu>
>
>It was my impression that EM fields, like gravitational fields; dropped
>off inversely proportional to the distance squared?  I.e. the field at a
>distance 'd' away is equal to the field at "zero" distance, times
>1/(d^2)
>
>Viggy
>
>> -----Original Message-----
>> From: Tesla List [mailto:tesla-at-pupman-dot-com]
>> Sent: Sunday, February 13, 2000 6:52 PM
>> To: tesla-at-pupman-dot-com
>> Subject: Re: Pacmakers and Tesla coils = bad??
>>
>>
>> Original Poster: "Brent Turner" <bturner-at-apc-dot-net>
>>
>> Hi all -
>>
>    [ S N I P ]
>>
>>    I believe Bill Wysock did some studies into this -- basically even
>> for a coil on his scale (*huge*) the strength of the EM field dropped
>> pretty drastically as you move away from the coil. (Bill - any
>> comments??)
>>
>    [ S N I P ]
>>
>> - Brent
>
>
>